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Qualitone |
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This Qualitone superhet dates to around late 1924 to early 1925. Dale Davenport used to own this set and he speculated that it was a factory wired set, and I’m inclined to agree with him. It could probably use a little restoration work but I will probably leave it just the way it is. Here are some particulars of this set: 1. Qualitone Type SH7 engraved panel, 30” long by 7” high by 3/16” thick. |
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Top chassis view of the Qualitone superhet. The parts layout is excellent with very short leads to the plate and grid connections of most of the tubes. Most of the parts date from the 1924-1925 time frame, including the Karas “Harmonik” audio transformer, the Dublier mica and paper capacitors, and the UV type tube sockets. |
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Two different views of the Qualitone filter transformer. This style of transformer is identical to the Klentz transformer. The transformer has a unique shape which means that there must be some connection between Qualitone and Klentz. There could be a connection with Webster Electrical Company also, because early Klentz transformers from 1924 had the same shape as Webster RF transformers from 1923. The Webster tuning capacitors in this set kind of tie things together a little bit. |
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Webster Electrical Company tuning capacitor. There appears to be some connection between Qualitone, Klentz, and Webster. |
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Parts layout and schematic diagram for a Klentz superheterodyne described in the Fall, 1924, Citizens Radio Call Book. This layout and schematic is very close to the Qualitone superhet. The Klentz has two rheostats, whereas the Qualitone only has one. |
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Close up view of the Qualitone oscillator coupler. |
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Inside angle view of the Qualitone superheterodyne. |
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Advertisement for the Klentz IF transformers as copied from the Fall, 1925, Citizens Radio Call Book. The Qualitone transformers appear to be identical to this style of Klentz transformers. |
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Page added November 16, 2018 (updated January 1, 2019) |
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